--- title: "Captured source: Assistant Communication Architecture" description: "Captured source: Assistant Communication Architecture Original ticket source file: assistant-communication-architecture.md. Kagi Assistant - URL: https://assistant.kagi.com/chat/18bcbbc5-f4f2-4e6d-ae0…" doc_version: 1 last_updated: 2026-10-15 canonical_url: "http://parc.yolo.scapegoat.dev/note/research/2026/08/03/busybar-communication-sources/assistant-communication-architecture" --- # Captured source: Assistant Communication Architecture Captured source: Assistant Communication Architecture Original ticket source file: assistant-communication-architecture.md. Kagi Assistant - URL: https://assistant.kagi.com/chat/18bcbbc5-f4f2-4e6d-ae0… ## Content # Captured source: Assistant Communication Architecture Original ticket source file: `assistant-communication-architecture.md`. # Kagi Assistant - URL: https://assistant.kagi.com/chat/18bcbbc5-f4f2-4e6d-ae0d-f6b25439fae9 - Waited: 14036 ms - Profile: Kimi K2.6 (reasoning) ## Prompt Analyze the BUSY Bar communication architecture using public BUSY Bar documentation, the official busy-app/busybar-firmware repository, and MQTT standards. Focus on the exact device-to-cloud protocol, MQTT broker/TLS/authentication, topic scoping, presence and last-will behavior, reconnect/keepalive behavior, account linking, and remote HTTP API tunneling. Distinguish facts directly supported by source code or documentation from architectural inferences. Cite URLs and firmware file paths. ## Response I'll research the BUSY Bar communication architecture systematically. Let me start by locating the official firmware repository and public documentation.Searched with Kagi busy-app/busybar-firmware github repository BUSY Bar device cloud MQTT protocol documentation BUSY Bar remote HTTP API tunneling account linking Sources (10): Firmware source code for BUSY Bar https://github.com/busy-app/busybar-firmware Jul 16, 2026 Firmware source code for BUSY Bar. Contribute to busy-app/busybar-firmware development by creating an account on GitHub. ... Firmware source code for BUSY Bar. Contribute to busy-app/busybar-firmware development by creating an account on GitHub. ... busy-app / busybar-firmware Public. Notifications You must be signed in to change notification settings. Fork 3.Using an in-circuit debugger (Main firmware only). The SWD interface is not accessible on an assembled device — it has to be partially disassembled and the BSB debug board attached. Connect an ST-Link or a CMSIS-DAP compatible debugger to the SWD pins on the debug board and run busybar-firmware/documentation/Firmware.dox.md at dev https://github.com/busy-app/busybar-firmware/blob/dev/documentation/Firmware.dox.md Firmware source code for BUSY Bar. Contribute to busy-app/busybar-firmware development by creating an account on GitHub. busybar-firmware/documentation/Quick Start.dox.md at dev https://github.com/busy-app/busybar-firmware/blob/dev/documentation/Quick%20Start.dox.md Jul 16, 2026 Firmware source code for BUSY Bar. Contribute to busy-app/busybar-firmware development by creating an account on GitHub. busybar-firmware/documentation/Concepts.dox.md at dev https://github.com/busy-app/busybar-firmware/blob/dev/documentation/Concepts.dox.md Firmware source code for BUSY Bar. Contribute to busy-app/busybar-firmware development by creating an account on GitHub. Releases · busy-app/busybar-firmware · GitHub https://github.com/busy-app/busybar-firmware/releases Firmware source code for BUSY Bar. Contribute to busy-app/busybar-firmware development by creating an account on GitHub. busybar-firmware/documentation/Hardware.dox.md at dev https://github.com/busy-app/busybar-firmware/blob/dev/documentation/Hardware.dox.md Firmware source code for BUSY Bar. Contribute to busy-app/busybar-firmware development by creating an account on GitHub. busybar-firmware/applications/system at dev · busy-app ... - GitHub https://github.com/busy-app/busybar-firmware/tree/dev/applications/system Firmware source code for BUSY Bar. Contribute to busy-app/busybar-firmware development by creating an account on GitHub. Pull requests · busy-app/busybar-firmware · GitHub https://github.com/busy-app/busybar-firmware/pulls Firmware source code for BUSY Bar. Contribute to busy-app/busybar-firmware development by creating an account on GitHub. GitHub - daninsc/BusyBar-Custom-Scroll: Apps and code for the... https://github.com/daninsc/BusyBar-Custom-Scroll Jul 20, 2026 While investigating device state over the HTTP API, found that the BUSY desktop app's "ON CALL" mic-sensing integration would sometimes never push its status to the physical device (/api/busy/snapshot never updates). Filed as busybar-firmware#890 and root-caused with the maintainers: BUSY's OnCallDisplayLoop also draws at priority 50, the same priority this dashboard used to draw at, so the two apps collided and one would lose the display contest. Not a firmware bug -- fixed on our side by dropping this dashboard's priority to 30 (see above). Issue closed. Learning to code by building little apps for BUSY Bar. Its ... https://www.instagram.com/reel/Da6BixmjpYF/ Jul 21, 2026 BUSY Bar has an open API and open firmware, perfect for developing custom projects. I can check the code, export to GitHub, or publish ... Sources (10): BUSY Bar — Productivity Multi-tool Device with an LED pixel ... https://busy.app/ Nov 11, 2016 • Connect to any cloud via MQTT. • No vendor lock-in. Connect BUSY Bar to your project using the open API and any type of network connection. LAN vi a Wi-Fi. ... Mute all devices. BUSY Bar integrates with the free cloud-based BUSY App infrastructure. Block distractions across all platforms simultaneously, so nothing pulls you away while you’re focused. BUSY App works on your computer, phone, and smartwatch.Right out of the box, BUSY Bar comes with an open API, ready for integration into your project. Multiple network connectivity. Connect BUSY Bar to your project using the open API and any type of network connection: USB, LAN, or Cloud. ... BUSY Bar is a productivity multi-tool with an LED pixel screen for custom statuses. Built-in Pomodoro timer and apps. Fully customizable, open-source, and hacker-friendly BUSY Bar HTTP API - BUSY Bar Docs - docs.busy.app https://docs.busy.app/bar/dev/http-api The open HTTP API turns BUSY Bar into a fully network-controlled device. Everything you can do manually or through BUSY App can also be done with API requests from your scripts or your own services. BUSY Bar Documentation - BUSY Bar Docs https://docs.busy.app/ K BUSY Bar Documentation Basics First start Restart Controls Pair with your phone Connect to Wi-Fi Firmware update Set up via PC Monitor mount BUSY and CUSTOM modes Set up modes on BUSY Bar Set up modes via mobile app Block apps and notifications Apps and integrations Clock Auto ON CALL status Google Calendar integration Local web interface ... MQTT API | myDevices Documentation https://docs.mydevices.com/docs/device/mqtt MQTT is the preferred API protocol to send and receive data to and from myDevices dashboard. Payloads are plain text based or JSON, and topics follow a tree ... MQTT - The Standard for IoT Messaging https://mqtt.org/ Oct 10, 2008 MQTT allows for messaging between device to cloud and cloud to device. This makes for easy broadcasting messages to groups of things. ... MQTT allows for messaging between device to cloud and cloud to device. This makes for easy broadcasting messages to groups of things.MQTT’s support for persistent sessions reduces the time to reconnect the client with the broker. Security Enabled. MQTT makes it easy to encrypt messages using TLS and authenticate clients using modern authentication protocols, such as OAuth. MQTT Publish / Subscribe Architecture. Links to documentation on the MQTT specification and APIs. https://mqtt.org/mqtt-specification/ Jul 31, 2020 formerly known as MQTT-S, is available > here. MQTT for Sensor Networks is aimed at embedded devices on non-TCP/IP networks, such as Zigbee. MQTT-SN is a publish/subscribe messaging protocol for wireless sensor networks (WSN), with the aim of extending the MQTT protocol beyond the reach of TCP/IP infrastructure for Sensor and Actuator solutions. Software https://mqtt.org/software/ Dec 02, 2014 Loop is a cloud based MQTT broker with scalability, high availability and security at core. Loop provides full MQTT 3.1 support and JMS connectivity. It can handle extremely large numbers of connected clients.Yunba is a backend cloud platform that provides real-time message dispatch service to mobile applications and devices and uses MQTT as a transport protocol. The services include bi-directional push for instant-messaging, real-time analyzing, real-time online monitoring. MQTT Documentation - CloudAMQP https://www.cloudamqp.com/docs/mqtt.html Jul 19, 2015 MQ Telemetry Transport is a publish-subscribe pattern-based "lightweight" messaging protocol. The protocol is often used in the IoT (Internet of Things) world of connected devices.Learn more about MQTT for RabbitMQ in the official documentation: RabbitMQ MQTT Plugin. Language-specific documentation can be found here: Ruby, Python, NodeJS, Java, GO, .NET, NodeMCU (Lua), PHP. AMQP vs MQTT: Messaging protocols compared - CloudAMQP https://www.cloudamqp.com/blog/amqp-vs-mqtt.html Jun 21, 2023 Both AMQP and MQTT are messaging protocols. However, both protocols have their strengths and weaknesses, making it essential to understand their similarities, differences, and use cases.The exchange acting as the routing agent, forwards these messages to the appropriate queue using its routing rules. Figure 1 - AMQP Broker. MQTT, on the other hand, is a lightweight and efficient open standard protocol. MQTT is optimized for constrained devices and unreliable networks. MQTT also follows a brokered pattern where publishers publish messages to a topic in a broker. Flipper Busy Bar: The Hackable Desk Display with Open API https://byteiota.com/flipper-busy-bar-the-hackable-desk-display-with-open-api/ MQTT lets you subscribe to device events (button press, timer end, status change) and publish commands to update the display, using your own broker. The cloud API is optional: use busy.app or run your own MQTT server. Official SDKs are available for Python, TypeScript, and Go from day one. The source is open. Sources (10): Development - BUSY Bar Docs https://docs.busy.app/bar/dev Developers can control BUSY Bar through its open HTTP API, including displaying custom images, switching operating modes, and configuring device settings. ... Development Developers can control BUSY Bar through its open HTTP API, including displaying custom images, switching operating modes, and configuring device settings. The same API works over local connections via USB or Wi-Fi, as well as remotely over the internet using API token authentication. BUSY Bar HTTP API - BUSY Bar Docs - docs.busy.app https://docs.busy.app/bar/dev/http-api The open HTTP API turns BUSY Bar into a fully network-controlled device. Everything you can do manually or through BUSY App can also be done with API requests from your scripts or your own services. Local web interface - BUSY Bar Docs https://docs.busy.app/bar/local-web-interface Jul 15, 2026 BUSY account issues.also published online in busy docs learn more about busy bar http api docid\ auzqjnm9mqnf yrs3x8yp enable http api access you can enable http api access to send requests and control busy bar when connected via wi fi by default, access via wi fi is disabled to enable it, you need to switch on the httpi api. Busy — BUSY Bar HTTP API - BUSY Bar Docs https://docs.busy.app/bar/dev/http-api/busy BUSY timer control — explore the Busy endpoints of the BUSY Bar HTTP API: methods, parameters, response schemas and live "Try it" examples. BUSY account - BUSY Bar Docs https://docs.busy.app/bar/account busy account is the cloud service that keeps the entire busy ecosystem in sync, including the busy app on mobile and desktop and your busy bar it syncs your focus sessions, timers, and integrations across all your devices, enables secure remote access to your busy bar over the internet, and manages api access for connected services and ... Streaming — BUSY Bar HTTP API - BUSY Bar Docs https://docs.busy.app/bar/dev/http-api/streaming Screen streaming — explore the Streaming endpoints of the BUSY Bar HTTP API: methods, parameters, response schemas and live "Try it" examples. API tokens - BUSY Bar Docs https://docs.busy.app/bar/dev/api-tokens An API token is a unique key that lets apps and services securely connect to your BUSY Bar over the internet. Link device to a smart home — BUSY Bar HTTP API - BUSY Bar Docs https://docs.busy.app/bar/dev/http-api/smart_home/pairing-post Link device to a smart home via the BUSY Bar HTTP API (POST /api/smart_home/pairing). Request parameters, response schema and code examples. rnadyrshin/busy-bar-http-api-examples-ru https://github.com/rnadyrshin/busy-bar-http-api-examples-ru Contribute to rnadyrshin/busy-bar-http-api-examples-ru development by creating an account on GitHub. Project Update: Dec 2025 | Blog – BUSY Bar https://blog.busy.app/project-update-december-2025/ May 28, 2026 Linking BUSY Bar to a BUSY account. Flashing firmware from a file. Adjusting screen brightness and notification volume. HTTP API improvements. The open HTTP API allows you to control BUSY Bar via USB, locally over Wi-Fi, or through the internet. You’ll be able to create widgets that run on a computer and use BUSY Bar as a display with a convenient API. You don’t even need to be a programmer — AI assistants handle the API very well. Thinking Good, I found the official GitHub repository and documentation. Now let me access the firmware source code and the official documentation to get specific details about the MQTT protocol, HTTP API, authentication, and architecture. Let me use the librarian tool to fetch the relevant documentation and explore the firmware repository. Now let me fetch the official documentation and explore the firmware source code for specific protocol details.Gathering key details from ## Thinking The user wants an analysis of the BUSY Bar communication architecture. This is a very specific technical question about a specific product. I need to search for: BUSY Bar documentation (public) Official busy-app/busybar-firmware repository MQTT standards (for context/comparison) Device-to-cloud protocol specifics MQTT broker/TLS/authentication details Topic scoping Presence and last-will behavior Reconnect/keepalive behavior Account linking Remote HTTP API tunneling I need to distinguish facts from inferences and cite URLs and firmware file paths. Let me start by searching for the BUSY Bar firmware repository and documentation. ## Sitemap - [Home](http://parc.yolo.scapegoat.dev/) - [Home markdown mirror](http://parc.yolo.scapegoat.dev/index.md) - [Markdown sitemap](http://parc.yolo.scapegoat.dev/sitemap.md)